Fun fact, my Grandpa fought in Europe, mostly Italy, during the War.
He once told me that you could tell where a man fought by what racial slurs they used. He didn't know that 'Nip' was a racial slur until the 1970s, because men in the European theater of war used 'Jap,' and when he'd heard 'Nip' he'd assumed it was a normal term, like 'Brit.'